pyqt5写个跑马灯效果

from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QGridLayout
from PyQt5.QtGui import QColor
from PyQt5.QtCore import QTimer

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()

        self.grid_layout = QGridLayout()
        self.labels = []

        for i in range(9):
            label = QLabel()
            label.setStyleSheet("background-color: red")
            self.labels.append(label)
            self.grid_layout.addWidget(label, i // 3, i % 3)

        self.setLayout(self.grid_layout)

        self.timer = QTimer()
        self.timer.timeout.connect(self.change_color)
        self.timer.start(100)  # 1秒钟变换一次颜色

        self.current_index = 0  # 当前标签索引

    def change_color(self):
        # 重置所有标签为红色
        for label in self.labels:
            label.setStyleSheet("background-color: red")

        # 设置当前索引的标签为绿色
        current_label = self.labels[self.current_index]
        current_label.setStyleSheet("background-color: green")

        # 更新索引
        self.current_index = (self.current_index + 1) % len(self.labels)

if __name__ == '__main__':
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()